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Patent US3618339A successfully refreshed from Google Patents.
US3618339A
Expired / Lapsed
US
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Universal joint
Assignee: Dow Chemical Co
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Filing: 1970-01-30
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Granted: 1971-11-09
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Expires: 1990-01-30
Abstract
Abstract A UNIVERSAL JOINT IS PREPARED WITHOUT BEARINGS AND HAVING FLEXING MEMBERS AT RIGHT ANGLES TO EACH OTHER WHOSE MAJOR CROSS-SECTIONAL DIMENSION IS PARALLEL TO THE AXIS OF ROTATION OF THE SHAFTS.
Inventors
- 👤 Douglas S Chisholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:23
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/005; F16D3/50; F16D3/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |